That is to say, Golden Paper had likely been in contact with cave creatures before his death. After the assassination, he eventually disappeared in the cave area.
This gave Colin reason to believe there must be some connection between the Nameless Breathing Skill and cave creatures.
However, these discoveries could only help him understand what had happened hundreds of years ago.
But they were not of much help to his strength.
What really made Colin rush to the Wilderness Laboratory overnight, and spend several days capturing cave creatures and extracting cave factors, was because of the accidental discovery of the Nameless Breathing Skill!
Through that extremely difficult-to-practice manual, which was once widely followed but later disappeared without a trace, Colin unexpectedly found—
The eighth edition of the Breathing Skill left by Cumberland actually lacked a most crucial part!
